From 11bb66d96a61e4cf5dd1b160d51ba4b556cc4aee Mon Sep 17 00:00:00 2001
From: johnomotani <john.omotani@ukaea.uk>
Date: Wed, 11 Aug 2021 13:22:36 +0100
Subject: [PATCH] Use 'NETCDF4' as default format for DataFile

`NETCDF4` format is pretty universally supported now, and is probably the least surprising default.
---
 boututils/datafile.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/boututils/datafile.py b/boututils/datafile.py
index e31af4a..9524897 100644
--- a/boututils/datafile.py
+++ b/boututils/datafile.py
@@ -83,7 +83,7 @@ class DataFile(object):
     impl = None
 
     def __init__(
-        self, filename=None, write=False, create=False, format="NETCDF3_64BIT", **kwargs
+        self, filename=None, write=False, create=False, format="NETCDF4", **kwargs
     ):
         """